# Improving Power Quality by a Four-Wire Shunt Active Power Filter: A Case Study

> Research article (Energies, 2021) · cited 16× · AI/ML

**Wikidata**: [openalex:W3146504869](https://www.wikidata.org/wiki/openalex:W3146504869)  
**Source**: https://4ort.xyz/entity/improving-power-quality-by-a-four-wire-shunt-active-power-filter-a-case-study